Lock



Aug. 25, 1925. 1,551,205

E. NAGY LOCK Filed Aug. 23, 1923 F1, 4 INVENTOR A TTORNE Y Patented Aug. 25 1925 UNITED STATES EGNACZ NAGY, OF EASTYOUNGSTOWN, OHIO. I

LOCK.

Application filed August 23, 1923. Serial No. 658,856.

To all whom it may concern:

Be it known that I, EcNAoz NAGY, a resident of the city of East Youngstown, in the county of lilahoning and State of Ohio, and a citizen of the United States, have invented certain new and; useful Improvements in Locks, of which the following is a specification.

This invention relates to door-locks and has for its object to provide a mechanism simple in construction though difficult to operate without information as to proper actuation of certain parts partly concealed, as well as the use of a particular form of key adapted thereto.

A further object of this invention is the provision of'a lock that may be actuated manually to locking position without the use of a key, but which cannot'be unlocked without first, directly and manually operating a partly concealed element and thereafter rocking a key in a particular direction.

Vith these and other objects in View which will appear as the details of the invention are described, the same consists in certain features recited in the appended claims and illustrated in the accompanying drawings in which:

Fig. 1 is aperspective view of the lock shown as secured to a door;

Fig. 2 is a rear face view of the lock in locked position and the cover plate removed;

Fig. 3 is a similar view with themanual tumbler in. raised position;

4 is a rear face view of the lock in unlocked position with the bolt withdrawn and the key shown inserted, and

Fig. 5 is a detailed View of one of the tumblers.

In the drawings in which the same characters designate the same parts throughout the several views, the main body or case 10 having a detachable cover plate 11 at the rear face thereof, is provided with securing bolts 12 ordinarily extending through the same and through the wall ofthe door on which it is to be mounted, and attached at the inside of the latter by nuts adapted to be tightened against the narrow plate'13 which may connect two or more of said bolts.

Said cover 11 is secured to the case by rivets 14-, and the case comprises two parallel channels 15 and 16, both rectangular in cross-section, the former extending the entire length of the case, and the latter a little less than its full length. The locking bolt 17is movable longitudinally through the case in the channel 15 and has an outwardly extending hook 18 to which is attached one end of an expansion spring 19 whose other end is fixedly secured to a pin 20 of the case.

The latter has a shallow channel 21 parallel with and in communication with channel 15 and thereby provides an elongated seat for said spring.

Said bolt 17 is much longer than the case so that whenthe device is locked, the bolt projects from its channel at both ends thereof. Said bolt has a face depression bounded by' the shoulders 22 and 23 between which are movable transversely the tumblers 24: and 25. Both of these tumblers have a cutout portion 26 and a shoulder 27 adapted to seat in the upper notches 28 and 29, respectively, of the bolt under certain conditions. Tumbler 24 is longer than 25 so that when the shoulder 27 of the former rides upon the upper edge of the bolt, the lower end of the tumbler will extend down across the channel 16 into a flared notch or opening 80 of the case, the said notch being large enough and adapted for insertion of a finger, for certain purposes to be described later. The tumbler 25 never crosseschannel 16, but its lower end rests in alinement with the up per edge of said channelwhen in its lowest position. v

It is to benoted that the channel 16 is shallower than 15 but the upper face of both of them are level with the inner face of the cover 11. Transverse of the lock case, and

affording a communication between channel per endof the tumbler 24 plays, 33 tending normally to press the shoulder 27 downward against the bolt and into whichever notch, 28 or 29, is in position to receive it. Another transverse channel 34 is provided parallel with 31, but shallower and communicating both with 16 and 15, but not with the exterior space.- In 34, tumbler 25 plays and is further guided by another channel 35 above the bolt and seating therein a coiled spring 36, for normally pressing the shoulder 27 downward against the bolt, and into notch 29 when the latter and 35 are in registry. Since the shoulder 27 of both tumblers 24 and 25 is on the rear side thereof, as shown in Figs. 2, 3 and 4, it is only shown in these views by dotted lines. It is however shown clearly as to tumbler 24 in Fig. 5, and is similar in construction to that of tumbler 25 as to this feature. The only appreciable diflerence in the c0nstruction of the two tumblers being that the lower end of 24 is so far extended that another shoulder 37 is formed on the opposite side from 27, as shown in Fig. 5, and a coiled blunt end 38 is formed at its lower end for insertion in the notch 30. Between 37 and 38 there is thus formedon the up- .per side of tumbler 24, as shown in Fig. 5,

' ,The operation of this look will now be seen to depend upon a number of factors, including not only the number of tumblers employed and the notches in the upper edge of the bolt, it being assumed that a. key would be required for releasing certain of said tumblers, but also upon a manual actuation ofthe tumbler 24 from the notch 30. This makes possible a very positive and predetermined sequence of operations that must be followed in looking and unlocking, as well as provides a strong case having a powerful bolt which cannot be locked or unlocked by use of the key only, though one of the proper shape and size be provided. i

The bolt constructed as above described in detail will now be seen to be capable of operation by mechanical actuation or pressure in the following order. Assuming that the bolt is unlocked, as shown in Fig. 4, this view showing the parts as positioned immediately after the tilting of the key and the recession of the bolt, the tumbler 25 now rests upon the upper edge of the bolt 17 and has compressed the spring 36, while the tumbler 24 is. in its lower position with its shoulder 27 resting in notch 29 and spring 32 expanded. Spring 19 is now exerting little force upon the hook 18 of 'thebolt 17, but there is no means of locking the bolt by the ordinary routine, because the key is not effective to produce any result except to raise tumbler 25 and only slightly raise tumbler 24. Further exertion of a pressing force at the rear end 41 of bolt 17 is not effective to lock the device, because tumbler 24 is still seated in notch 29: It is evident however that an upward pressing force upon coil 38 in notch 30 will compress spring 32 and lift tumbler 24 sufficiently high to withdraw from notch 29 so that continued pressure at 41 will press the lock 17 forward against the force of spring 19 until both tumblers are seated in notches 28 and 29 under the action of their compression springs. The bolt is now locked in the extended position, shown in Figs. 1, 2 and 3, and both tumblers are received in their respective notches of the bolt, thus providing a very effective lock. In this position spring 19 has been greatly expanded and is normally exerting a force to withdraw the bolt.

It is to be noted that key 40 has spaced lugs 42 and 43 in suitable relation to aline properly with channels 31 and 34, that lug 43 is much higher than 42, and that channel 16 is wider than 40, thus permitting, when. inserted, the rocking of the key in the direction indicated in Fig. 4, to wholly lift tumbler 25 from its notch 29, though lug 42 is ineffective to wholly raise tumbler 24.

Therefore, the operation of unlocking necessarily comprises first, lifting the tumbler, 24 from its position in Fig. 2 to that of Fig. 3 by pressing upon 38 in the notch 30. The rocking of the key in the manner shown in Fig. 4 will then lift tumbler 25 sufliciently so that the action of spring 19 will release the bolt and permit tumbler 24 to again seat in notch 29.

By the explanation above given, it will be seen that no key is essential for locking, mere lifting of tumbler 24 being suflicient to permit manual locking of the bolt by pressure upon the end 41. The key is however essential in unlocking, but is not effective therefore until tumbler 24 is first lifted manually. More clearly stated, shoulder 27 of tumbler 24 drops into notch 28'at the end of the locking operation, and into notch 29 at the end of the unlocking operation, and must be manually raised before locking or unlocking.

lVhile applicant has only shown in this disclosure two tumblers one key actuated and the other manually, he by no means desires to limit himself as to this number of tumblers or corresponding lugs on the key. It is obvious that the number of tumblers 25 might be increased while using but one tumbler 24. Or that a plurality of tumblers 24 might be used in combination with one or aplurality of (short) tumblers 25. It is especially to be understood that applicant contemplates the use of various combina. tions all based upon the generic idea of partial manual actuation and subsequent key operation in unlocking, and direct thrust of the bolt in looking, to provide various forms of lock actuation.

Applicant has shown his key 40 with the handle 44 pivoted thereto at 45 for compact storing. While I have illustrated and described a preferred embodiment of my invention, it is understood that various changes and modifications may be made without departing from the spirit and scope thereof as outlined in the appended claims.

hat I claim as new and desire to protect by Letters Patent is,

1. In a look a casing element, a bolt slidable in said casing element and having a plurality of seats or notches tliereiinvvertical tumbler bars normally and simultaneously resting in their respective notches to hold the bolt in its locked position, a key adapted for insertion in said casing element and having means thereon for operating all but one of the said bars to disengage them from their seats in the bolt, and one of said bars having an extension normally movable in an outwardly-flaring opening in the casing wall whereby it may be actuated manually to fully release it.

2. In a look a casing element having two spaced longitudinal channels, a shallower channel parallel with and in communication with one of the others, a plurality of cross channels, at least one of them having an outwardly flaring opening communicating with the exterior of the casing, and one of said firstmentioned channels having open ends, a bolt slidable in said open ended channel and having a plurality of notches therein, an expansion spring seated in said shallower channel and tending to normally unlock said bolt, tumblers movable in said cross channels and resting in the respective notches to hold the bolt in its locked position, a key adapted for insertion in one of the channels and having means thereon for operating all but one of said tumblers to disengage them from their seats in the bolt, said one of said tumblers having an extension thereon normally movable in said outwardly flaring opening whereby it may be actuated manually to release it.

3. In a look a casing element having a plurality of longitudinal channels, an out wardly flaring opening in the wall of the casing and a plurality of cross channels one of which communicates with said opening, a bolt slidable in one of said longitudinal channels and having a plurality of notches therein, vertical tumbler bars movable in said cross channels and normally resting in the respective notches and one of them having an elongated extension movable in said opening, spring means for normally holding the bolt in unlocked position, spring means for normally pressing said tumbler bars into the respective notches when the bolt is locked, and at least one of them into notches when the bolt is withdrawn, the rear end of the bolt protruding through the casing wall in all positions of the bolt, and key means adapted to be inserted in another of said longitudinal channels for lifting all but the elongated bar, whereby the bolt can only be locked by direct manual thrust or withdrawn by said key means, when the elongated bar is first actuated by direct manipulation. i

4. In a look a casing element having a plurality of longitudinal channels, a plurality of cross channels, one of the latter communicating with the exterior through an opening in the wall of the casing, a bolt slidable in one of said longitudinal channels and having a plurality of notches therein, vertical tumbler bars movable in said cross channels and normallyresting in the respective notches and one of them having an extension adapted to move in said opening, spring means for normally pressing said elongated bar into one of said notches when the bolt is locked and into another when the bolt is withdrawn, and a keyhaving means for lifting the other bars.

5. In a lock a casing element having a plurality of longitudinal channels, a plurality of cross channels, one of the latter communicating with the exterior through an opening in the wall of the casing, a bolt slidable in one of said channels and having a plurality of notches in its edge farthest from the other longitudinal channel, a key adapted to be inserted in the latter channel, tumbler bars movable in said cross channels and normally resting in said notches and having extensions leading across and beyond the bolt, one of said extensions leading further into and adapted to move in said opening, and spring means for normally pressing said elongated bar into one of said notches when the bolt is locked and into another when the bolt is withdrawn.

6. In a lock, a casing element, a bolt slidable in said casing element, a key adapted for insertion in said casing element and laterally spaced from said bolt, the latter having a plurality of seats or notches in its edge farthest from the key channel, cross tumbler bars normally resting in the respective notches to hold the bolt in its locked position, one of said bars having an extension leading across the bolt and key and normally movable in an outwardly flaring opening in the casing wall whereby it may be actuated manually to fully release it, and means on saidkey for operating the other of said bars to disengage them from their seats in the bolt.

7. In a lock having parallel bolt and key channels, a notched bolt slidable therein,

transverse tumblers normally resting in the of said tumblers partly from its seat in the bolt and the others fully from their seats and means extending from the one said tumbler projecting into an opening in the lock wall whereby it may be manually actuated to fully release it from its seat in the bolt.

8.. A look having a sliding bolt, and the latter a notch therein, a tumbler normally seated in said notch, key means for partially Withdrawing said tumbler from the notch, and means on said tumbler extending through the Wall of the lock for manual actuation to fully Withdraw the tumbler from the notch. 1

9. A look having a sliding bolt and a spaced parallel channel for receiving a key therein, the said bolt having notches, and the Wall of the lock having an opening on the side of the said channel opposite from the bolt, means movable in said opening and extending across the channel for engaging said notches in both the locked and unlocked position of the bolt, means for normally urging said engaging means toward the, bolt, and means on said key for partially Withdrawing said engaging means.

10. The combination With a casing having a locking bolt slidably mounted therein and formed with seats or notches in one edge thereof, and a key adapted to enter the easing spaced from and at the side of the bolt opposite said notches, of tumblers slidably v mounted at right angles to the bolt each comprising a shoulder adjacent one end for seating in said notches, an extension at the other end and an intermediate portion bridging said bolt adapted to be actuated by said key, the extension of one of said tumblers movable in an opening in the casing Wall whereby it may be actuated manually and directly, substantially as described.

11. In a lock having a bolt slidable therethrough, said bolt having a plurality of notches therein, the combination of a plurality of tumbler bars normally seated in said notches, one of said bars seated in one said notch When the bolt is locked and another when the bolt is unlocked,'and extending into an opening in the Wall of the look so that it may be actuated manually, and a key adapted for insertion in the lock and having means thereon for operating all of said bars to disengage them from their signature.

EGNACZ NAGY. 

